4.8 Article

A Biomimetic Approach for Spatially Controlled Cell Membrane Engineering Using Fusogenic Spherical Nucleic Acid

Journal

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 61, Issue 1, Pages -

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202111647

Keywords

cell assembly; cell membrane engineering; functional DNA; spatially controlled modification; spherical nucleic acid

Funding

  1. National Natural Science Foundation of China [21877032]
  2. Hunan Province Talented Young Scientists Program [2019RS2021, 2019RS2023]
  3. Hunan Province Natural Science Foundation [2020JJ4172]
  4. Open Research Fund Program of the State Key Laboratory of Analytical Chemistry for Life Sciences [SKLACLS2102]
  5. Fundamental Research Funds for the Central Universities

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By utilizing liposome fusion-based transport, functional DNA can be applied to both external and internal cell surfaces, expanding the applications of cell engineering. This approach allows for efficient and spatially controlled engineering of cell membranes, enabling the construction of anisotropic membrane structures.
Engineering of the cell plasma membrane using functional DNA is important for studying and controlling cellular behaviors. However, most efforts to apply artificial DNA interactions on cells are limited to external membrane surface due to the lack of suitable synthetic tools to engineer the intracellular side, which impedes many applications in cell biology. Inspired by the natural extracellular vesicle-cell fusion process, we have developed a fusogenic spherical nucleic acid construct to realize robust DNA functionalization on both external and internal cell surfaces via liposome fusion-based transport (LiFT) strategy, which enables applications including the construction of heterotypic cell assembly for programmed signaling pathway and detection of intracellular metabolites. This approach can engineer cell membranes in a highly efficient and spatially controlled manner, allowing one to build anisotropic membrane structures with two orthogonal DNA functionalities.

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